Pair of chopsticks and rocket: what they have in common

1. Step 1. Pair of chopsticks — is part of — Chopsticks. Tapering rods.
2. Step 2. Chopsticks — is a kind of — Cutlery. Chopsticks are East Asian cutlery.
3. Step 3. Cutlery — is made of — Stainless steel. Stainless steel.
4. Step 4. Stainless steel — is material for — Water-jet propulsion. The impeller is stainless steel.
5. Step 5. Water-jet propulsion — uses — Reaction force. A jet of water.
6. Step 6. Reaction force — is used in — Rocket. A rocket moves by reaction force.

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